"In that case, gods differ." Ebisu raises a finger. "Although needing sufficient power is a similarity. That's the only thing required, however. Heaven doesn't get a choice if an individual god reincarnates or not. A god dies, and then they reincarnate, and that's that. Theoretically, you could interfere with that... but one really shouldn't. Not unless they're thought to be that much of a threat. I don't think I've ever heard of such a thing happening, since reincarnation is thought to restart a god's important role."